Unveiling the Secrets of the Moon: Advancements in Lunar Seismic Research and the Potential for a Fiber Seismic Network

The enigmatic world of the Moon is not always silent, with rumblings deep within its surface catching the attention of scientists worldwide. With a desire to unravel the mysteries behind these lunar seismic events, seismologists are pondering the idea of deploying a fiber seismic network on the Moon similar to those on Earth. 

In a recent study, a dedicated team of researchers has outlined the obstacles that must be overcome to make this ambitious plan a reality. To test the feasibility of a lunar fiber seismic network, the team utilized artificial seismograms based on data collected by seismometers during the Apollo missions from 1969 to 1976. These data revealed numerous seismic events on the near side of the Moon, providing valuable insights into the lunar surface. 

By analyzing this data, scientists believe that a fiber seismic network could help identify specific seismic waves that could unlock secrets about the Moon's core structure. While activity was detected on the near side of the Moon, the far side remains shrouded in mystery. Scientists are particularly intrigued by the absence of moonquakes on the far side and the detection of moonquakes at depths where conditions would typically cause plastic deformation rather than brittle fractures. 

As efforts like the Artemis mission progress, researchers are eager to place more seismometers on the Moon's surface to expand their understanding of lunar seismic activity. One innovative approach being considered is the use of Distributed Acoustic Sensing (DAS) for a new Moon network. This technology involves deploying detectors and sensors to enhance exploration capabilities and provide valuable data about lunar seismic events. 

However, challenges like the regolith layer covering the Moon's surface pose a significant obstacle, as it can scatter seismic waves and hinder the detection of crucial signals. To address this challenge, researchers like Wu and his colleagues are exploring signal processing techniques like array stacking with data from multiple sensors in a DAS array. 

This technique could help separate desired signals from unwanted noise, improving the efficiency of data retrieval from the network. By conducting robust numerical simulations before deployment, scientists aim to ensure the network's success in capturing and utilizing seismic data effectively. 

 While challenges related to power supply and repairs for a lunar fiber seismic network remain, researchers are optimistic about the potential benefits of such a network. With careful planning and innovative solutions, the dream of a comprehensive lunar fiber seismic network may soon become a reality, shedding light on the Moon's hidden seismic secrets for years to come.